Architecture

More than 60% of housing in South Korea consists of mass constructed apartment neighborhoods. Due to poor quality construction materials and components, the average operative life of apartment buildings is 20 years. The rapid degradation and low maintenance condition of transparent and semi-opaque components, as well as the limited daylight access in the standard apartment layout, are cause for the lower visual comfort of occupants. This research analyzes the improvement in visual comfort for the renovation of an exemplary apartment unit in Seoul, using Building Information Modeling (BIM) and parametric environmental analysis tools. The existing apartment is virtually reconstructed with BIM software. The building model is exported to Computer-Aided Design software to execute parametric daylight analyses through environmental simulation software. An enhanced modular building envelope and apartment layout are developed to reduce the energy demand for heating, cooling, artificial light...

Apartment buildings are the most common housing typology in South Korea. The mass construction of apartment neighborhoods during a period of rapid economic growth (1970–1997) involved the minimization of material use and quality, as well as industrialized construction processes. Accordingly, apartment buildings require essential renovation after only 20 years of operation. This study focuses on the improvement of thermal comfort for the renovation of an exemplary apartment building based on an integrated Building Information Modeling (BIM) and parametric software framework. The existing apartment was reconstructed with BIM software, and the virtual model was utilized for a parametric building energy simulation to calculate the thermal comfort condition of occupants during the entire year. The thermal comfort analysis results defined the criteria for the development of an enhanced building envelope system characterized by modular panels. The parametric energy simulation was executed ...

The objective of this study was to illustrate the urban flood resilience and sustainability improvement potential by integration of decentralized water management systems in sustainable urban regeneration projects. This paper discusses sustainable and resilient urban regeneration potentials using the example of an industrial compound (ICs) conversion in Seoul, South Korea. Urban flood vulnerability has been a concern globally due to land use changes, limited capacity of existing stormwater management infrastructures and the effects of climate change. Due to their comparably low building density, ICs can effectively contribute to the separation and decentralized retention and infiltration of stormwater. However, no sustainable and resilient conversion examples of ICs have been realized in Seoul so far. After identification of a representative IC, its exemplary sustainable conversion with implementation of decentralized water management infrastructures were designed. The rainwater col...

Globalization, tourism, virtuality, climate change, and the explosive growth of cities have generated a wide range of stressors, pollutants, and toxins that have been ravaging populations. This, coupled with viral, bacterial, and other pandemics, is rapidly creating a new reality that requires public health factors to be integrated more thoroughly into the planning and design of city regions. This prompts a questioning of the role and form of city centers as well as the distribution of people and activities in city regions. This goes beyond more outdoor spaces, places, and activities and new criteria for indoor events. Moreover, public transport, mobility, and infrastructure in general need to be retooled to deal with these emergent circumstances.

More than one quarter of buildings in the Republic of Korea (RoK) are aged, approaching the end of their projected lifetimes, and require renovation. Aged buildings in the RoK are generally demolished, and new buildings with higher gross floor areas are realized on the same properties. That kind of redevelopment is associated with increased resource consumption, related greenhouse gas emissions, and other environmental impacts, as well as the generation of construction waste and the displacement of existing building tenants. This study analyzes the legislative framework for sustainable building in the RoK. Legally mandated basic standards for new buildings and renovation were analyzed, and differences were identified. Calculation methods and criteria for sustainable building incentives were determined. Incentive calculation methods were applied to three case-study buildings, which represented the three most common building types in Korea. Maximum building height, floor-to-area and b...

Electric appliances for cooling and lighting are responsible for most of the increase in electricity consumption in Karachi, Pakistan. This study aims to investigate the impact of passive energy efficiency measures (PEEMs) on the potential reduction of indoor temperature and cooling energy demand of an architectural campus building (ACB) in Karachi, Pakistan. PEEMs focus on the building envelope’s design and construction, which is a key factor of influence on a building’s cooling energy demand. The existing architectural campus building was modeled using the building information modeling (BIM) software Autodesk Revit. Data related to the electricity consumption for cooling, building masses, occupancy conditions, utility bills, energy use intensity, as well as space types, were collected and analyzed to develop a virtual ACB model. The utility bill data were used to calibrate the DesignBuilder and EnergyPlus base case models of the existing ACB. The cooling energy demand was compared...

In the tourism sector, particularly in hotels, generally much more resources per guest are consumed than in residential buildings per inhabitant. Tourists generally want to enjoy free time and don’t want primarily save resources. Accordingly the development and application of resource efficient and convenient so-called “zeroemission” concepts in hotels, can contribute to the saving of resources, such as energy, fresh water and nutrients. Good practice examples can function as role models for integrated urban resource management and contribute to increased awareness and distribution of knowledge regarding such systems. This paper discusses new decentralized approaches for the integrated management of resources, which can be applied in the tourism sector as well as in urban renewal projects and new urban developments. Recent developments in the cities Hamburg and Berlin (Germany, EU) are used as examples to discuss the potentialities for integrated system - and zero emission approache...

Earth-to-air heat exchangers (EAHEs) are widely used to reduce the indoor temperature and associated cooling energy demand of buildings. This study investigated the potential reduction in indoor temperatures via energy-efficient ventilation through EAHEs in an existing architectural campus building (ACB) with an energy-efficient renovated building envelope in the hot and humid climate of Karachi, Pakistan. The building information modeling (BIM) program Autodesk Revit was used to develop a virtual ACB BIM model. An EnergyPlus parametric analysis of the ACB BIM model in DesignBuilder facilitated quantification of the influences of operating parameters such as pipe installation depth and pipe diameter for EAHEs with similar total pipe lengths and air-exchange rates on the performance of the EAHEs during the cooling season. A 3 m deep and 0.1 m diameter pipe layout in open space significantly reduces indoor temperature via a specific duct layout in an exemplary ACB. The results show th...

Neighborhood sustainability assessment systems support the planning of sustainable and resilient cities. This research analyses, compares, and evaluates three neighborhood sustainability assessment systems (NSA) of (i) the German Sustainable Building Council for Urban Districts (DGNB–UD), (ii) the USA Leadership in energy and environmental design for Neighborhood Development (LEED–ND), and (iii) the Indian Green Rating for Integrated Habitat Assessment for Large Developments (GRIHA–LD). The theoretical background, certification types, process, and evaluation methods of the three NSAs are discussed. The qualitative and quantitative comparative analysis and evaluation methods of the NSAs included identifying and assessing ten weighted essential urban sustainability themes. Indicators under each theme were identified and compared in the NSAs. The comparison showed the importance of particular themes based on assigned weights. LEED–ND focuses on “transportation” and “site planning”, whi...

This research assessed the urban sustainability of all 14 districts of the Cambodian capital Phnom Penh to identify weaknesses and improvement potentials to achieve the national development goals; the New Urban Agenda (NUA); and the Sustainable Development Goals (SDGs) 11 (sustainable cities and communities), 4 (quality education), and 5 (gender equality). The indicators’ selection was based on available data. The analysis of the indicators and their weights was based on the analytic hierarchy process (AHP). Indicator weights were used to improve assessment accuracy and identify each district’s unique characteristics and specific strengths and weaknesses. The normal distribution model was used to standardize the variables before comparison. Among the quality education indicators, the access to education and vocational training obtained the highest weight of 0.38, followed by education staff with 0.33 and facilities with 0.29. Among gender-equality-related indicators, the indicators ...